<?php

/**
 * This is the model class for table "post".
 *
 * The followings are the available columns in table 'post':
 * @property integer $id
 * @property string $author
 * @property string $title
 * @property string $content
 * @property string $tags
 * @property integer $status
 * @property integer $create_time
 * @property integer $update_time
 *
 * The followings are the available model relations:
 * @property Comment[] $comments
 */
class post extends CActiveRecord
{
	const STATUS_DRAFT=1;
    const STATUS_PUBLISHED=2;
    const STATUS_ARCHIVED=3;
	
	public function getStatus()
	 {
	  return array (
	   self::STATUS_DRAFT=>'Draft',
	   self::STATUS_PUBLISHED=>'Published',
	   self::STATUS_ARCHIVED=>'Archived',
	   );
	 }
	 
	public function tableName()
	{
		return 'post';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules()
{
    return array(
        array('title, content, status, author', 'required'),
        array('title', 'length', 'max'=>50),
        array('status', 'in', 'range'=>array(1,2,3)),
        array('tags', 'match', 'pattern'=>'/^[\w\s,]+$/',
            'message'=>'Tags can only contain word characters.'),
        array('tags', 'normalizeTags'),
        array('title, status', 'safe', 'on'=>'search'),
	);
	
}
	public function normalizeTags($attribute,$params)
{
    $this->tags=tag::array2string(array_unique(tag::string2array($this->tags)));
}
	/**
	 * @return array relational rules.
	 */
	public function relations()
	{
		// NOTE: you may need to adjust the relation name and the related
		// class name for the relations automatically generated below.
		return array(
			'comments' => array(self::HAS_MANY, 'comment', 'post_id'),
			'commentCount'=>array(self::STAT, 'comment', 'post_id'),
		);
	}

	/**
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels()
	{
		return array(
			'id' => 'ID',
			'author' => 'Name',
			'title' => 'Title',
			'content' => 'Content',
			'tags' => 'Tags',
			'status' => 'Status',
			'create_time' => 'Create Time',
			'update_time' => 'Update Time',
		);
	}

	/**
	 * Retrieves a list of models based on the current search/filter conditions.
	 *
	 * Typical usecase:
	 * - Initialize the model fields with values from filter form.
	 * - Execute this method to get CActiveDataProvider instance which will filter
	 * models according to data in model fields.
	 * - Pass data provider to CGridView, CListView or any similar widget.
	 *
	 * @return CActiveDataProvider the data provider that can return the models
	 * based on the search/filter conditions.
	 */
	public function search()
	{
		// @todo Please modify the following code to remove attributes that should not be searched.

		$criteria=new CDbCriteria;

		$criteria->compare('id',$this->id);
		$criteria->compare('author',$this->author,true);
		$criteria->compare('title',$this->title,true);
		$criteria->compare('content',$this->content,true);
		$criteria->compare('tags',$this->tags,true);
		$criteria->compare('status',$this->status);
		$criteria->compare('create_time',$this->create_time);
		$criteria->compare('update_time',$this->update_time);

		return new CActiveDataProvider($this, array(
			'criteria'=>$criteria,
		));
	}

	/**
	 * Returns the static model of the specified AR class.
	 * Please note that you should have this exact method in all your CActiveRecord descendants!
	 * @param string $className active record class name.
	 * @return post the static model class
	 */
	public static function model($className=__CLASS__)
	{
		return parent::model($className);
	}
	
	protected function beforeSave() {
        if(parent::beforeSave())
    {
        if($this->isNewRecord)
        {
            $this->create_time=$this->update_time=time();
        }
        else
            $this->update_time=time();
        return true;
    }
    else
        return false;
    }
	
	protected function afterSave()
	{
		parent::afterSave();
		tag::model()->updateFrequency($this->_oldTags, $this->tags);
	}
	private $_oldTags;
 
	protected function afterFind()
		{
			parent::afterFind();
			$this->_oldTags=$this->tags;
		}
		
	protected function afterDelete()
	{
		parent::afterDelete();
		comment::model()->deleteAll('post_id='.$this->id);
		tag::model()->updateFrequency($this->tags, '');
	}
	
public function addComment($comment)
    {
        if(Yii::app()->params['commentNeedApproval'])
            $comment->status=comment::STATUS_PENDING;
        else
            $comment->status=comment::STATUS_APPROVED;
        $comment->post_id=$this->id;
        return $comment->save();
    }

}